Unauthenticated administrative access via spoofed client IP
Published Oct 10, 2023 · Updated Nov 28, 2025
Authentication bypass in Sangfor Next-Generation Application Firewall AF8.0.7 through AF8.0.17 allows remote attackers to access admin functions. Apache mod_rpaf accepts the client-controlled Y-Forwarded-For header as REMOTE_ADDR, and CFrontController::dispatchRequest skips authentication when that value is 127.0.0.1. No credentials or user interaction are required; a crafted HTTPS request reaches otherwise protected administrative routes.
Summary
What happened
Authentication bypass in Sangfor Next-Generation Application Firewall AF8.0.7 through AF8.0.17 allows remote attackers to access admin functions. Apache mod_rpaf accepts the client-controlled Y-Forwarded-For header as REMOTE_ADDR, and CFrontController::dispatchRequest skips authentication when that value is 127.0.0.1. No credentials or user interaction are required; a crafted HTTPS request reaches otherwise protected administrative routes.
The record
- CVE
- CVE-2023-30803
- Published
- Oct 10, 2023
- Updated
- Nov 28, 2025
- Vendor
- Sangfor Technologies
- Product
- Next-Generation Application Firewall
- Classifications
- CWE-290, CAPEC-21, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 10, 2023CVE publishedPublication date reported by the CVE source.
- Nov 28, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=8.0.17
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- watchTowr Sangfor NGAF authentication-bypass requestfunctional · demonstrated
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Technologies
Your stack
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Your stack
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